Apparatus for Manufacturing Secondary Battery and Method for Manufacturing Secondary Battery Using the Same

Abstract

The present disclosure relates to an apparatus for manufacturing a secondary battery and a method for manufacturing a secondary battery using the same.An apparatus for manufacturing a secondary battery, which comprises a pressing part configured to press a stack, in which electrodes and separators are stacked, wherein the pressing part includes: a main pressing part configured to press an entire surface of the stack; and a sub pressing part configured to press a partial surface of the stack, wherein the partial surface is formed on an end of the stack along a longitudinal direction and includes a surface having a lower height than a height of the entire surface, and the sub pressing part presses the partial surface while moving along the longitudinal direction of the stack.

1 . An apparatus for manufacturing a secondary battery, which comprises a pressing part configured to press a stack, in which electrodes and separators are stacked,
 wherein the pressing part comprises:
 a main pressing part configured to press an entire surface of the stack; and 
 a sub pressing part configured to press a partial surface of the stack, 
 wherein the partial surface is formed on an end of the stack along a longitudinal direction of the stack and comprises a surface having a lower height than a height of the entire surface, and 
 the sub pressing part presses the partial surface while moving along the longitudinal direction of the stack. 
   
     
     
         2 . The apparatus of  claim 1 , further comprising a moving part configured to move the stack in one direction,
 wherein the sub pressing part presses the partial surface while moving along a direction perpendicular to the one direction.   
     
     
         3 . The apparatus of  claim 1 , wherein the sub pressing part comprises:
 a drum part configured to press the partial surface of the stack while rotating the partial surface of the stack; and   a rotation shaft coupled to the drum part to rotate the drum part.   
     
     
         4 . The apparatus of  claim 1 , wherein the stack comprises an electrode tab connected to the electrodes, and
 the partial surface is disposed to correspond to the end of the stack, at which the electrode tab is disposed, along the longitudinal direction.   
     
     
         5 . The apparatus of  claim 1 , further comprising a heating part configured to apply heat to the stack in which the electrodes and the separators are stacked. 
     
     
         6 . The apparatus of  claim 1 , wherein the sub pressing part is disposed on a front side of the main pressing part. 
     
     
         7 . The apparatus of  claim 6 , wherein the sub pressing part presses the partial surface of the stack while moving in an outward direction from the inside of the stack. 
     
     
         8 . The apparatus of  claim 1 , wherein the sub pressing part is disposed on a rear side of the main pressing part. 
     
     
         9 . The apparatus of  claim 8 , wherein the sub pressing part presses the partial surface of the stack while moving in an inward direction from the outside of the stack. 
     
     
         10 . The apparatus of  claim 1 , wherein the stack is an electrode unit, comprising any one of a bi-cell, a mono-cell, or a full-cell. 
     
     
         11 . The apparatus of  claim 1 , wherein the stack is an electrode assembly in which a plurality of electrode units and a separator sheet are stacked. 
     
     
         12 . A method for manufacturing a secondary battery, which comprises a stack pressing process of pressing a stack, in which electrodes and separators are stacked,
 wherein the stack pressing process comprises:
 pressing an entire surface of the stack; and 
 pressing a partial surface of the stack, 
 wherein the partial surface is formed on an end of the stack along a longitudinal direction of the stack and comprises a surface having a lower height than the height of the entire surface, and 
 wherein, in the partial surface pressing process, a sub pressing part pressing the partial surface presses the partial surface while moving along a longitudinal direction of the stack.